For such a grand game, it's too embarrassing for the game bp to be carried out a little bit on the web page

Question: Can customization make a mod that hides the civilization selected by others?
As long as this mod is made, you can bp in the room during the game

I’m assuming you mean “blind pick”, and if so I disagree.

Would I mind if the developers implemented it? Also no. But it’s a niche competitive mode, and I’m happier for them to focus on the things they have been first.

Do you mean your teammates or opponents?